Area Velocity – no weir or flume needed! Handles submerged, surcharged, and reverse flow.
The sensor on the 750 module uses patented Doppler technology to directly measure average velocity in the flow stream. An integral pressure transducer measures liquid depth to determine flow area. The 6712 sampler then calculates flow rate by multiplying the area of the flow stream by its average velocity.
The 750 gives you greater accuracy in applications where weirs or flumes are not practical, or where submerged, full pipe, surcharged and reverse flow conditions may occur. With area velocity you don’t have to estimate the slope and roughness of the channel. And Teledyne ISCO’s exclusive 500 kHz Doppler penetrates farther into deep flow streams than 1 MHz systems, whose shorter wavelength can cause them to give “nearsighted” velocity measurement in typical wastewater applications. The Doppler system continuously profiles the flow stream, eliminating profiling and calibration required by electromagnetic systems.
- Brand
- STANDARD FEATURES
- MAIN APPLICATIONS
- SPECIFICATION
Brand
Isco Flowmeters
Isco Samplers
STANDARD FEATURES
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Sealed Area-Velocity sensor resists fouling by oil and grease. Streamlined shape sheds debris.
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Choice of standard (10 ft) and extended (30 ft) level measurement range.
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During the program’s operation, flow, velocity, and level values are viewable on the sampler’s LCD display.
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Level and velocity data stored in the sampler are available for later retrieval, reporting, and graphing using Teledyne ISCO Flowlink® software.
MAIN APPLICATIONS
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Accurate open channel flow measurement without a weir or flume
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Pretreatment Compliance
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Stormwater Runoff Monitoring
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Permit Enforcement
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Sewer Flow Monitoring
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Combined Sewer Overflow Studies
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Inflow and Infiltration Studies
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River and Stream Gauging
SPECIFICATION
750 Area Velocity Flow Module
| Size (HxWxD): | 4.9 x 5.7 x 2.0 in (12.4 x 14.5 x 5.1 cm) |
|---|---|
| Weight: | 0.9 lbs (0.4 kg) |
| Material: | Polystyrene |
| Enclosure: | NEMA 4X, 6 IP67 |
| Power: | 9 to 14V DC (provided by 6700 Series Sampler) |
| Program Memory: | Non-volatile, programmable flash; can be field updated through sampler |
| Operating Temperature: | 32° to 120°F (0° to 49°C) |
| Storage Temperature: | 0° to 140°F (-18° to 60°C) |
Level-to-Area Conversions
| Channel shapes: | Round, U-shaped, rectangular, trapezoidal |
|---|---|
| Data points: | Four sets of 50 level-area points |
Level-to-Flow Rate Conversions
| Weirs: | V-notch, rectangular, Cipolletti |
|---|---|
| Flumes: | Parshall, Palmer-Bowlus, Leopold-Lagco,Trapezoidal, H, HS, HL |
| Manning Formula: | Round, U-channel, rectangular, trapezoidal |
| Data Points: | Four sets of 50 level-flow rate points |
| Equation: | Two-term polynomial |
Area Velocity Sensor – Standard and Extended Range
| Size (LxWxH): | 6.6 x 1.6 x 1.2 inches (16.8 x 4.1 x 3.0 cm) |
|---|---|
| Weight, incl. cable: | 2.1 lbs (0.96 kg) for standard range probe with 25 foot cable; 3.9 lbs (1.8 kg) for extended range probe with 50 ft cable. |
| Materials: | Polybutadiene-based polyurethane, stainless steel; PVC and CPVC cable |
| Operating Temperature Range: | 32° to 160°F (0° to 71°C) |
| Compensated Temperature Range: | 32° to 100°F (0° to 38°C) |
Velocity Measurement
| Method: | Doppler Ultrasonic, 500 kHz |
|---|---|
| Velocity range: | -5 to +20 ft/s (-1.5 to 6.1 m/s) |
| Minimum depth: | 0.25 ft (75mm), typical |
Level Measurement
| Method: | Submerged pressure transducer |
|---|---|
| Standard range probe: | Measurement range 0.05 to 10 ft (0.015 to 3.05 m); max level 20 ft (6.1 m) |
| Extended range probe: | Measurement range 0.05 to 30 ft (0.015 to 9.1 m); max level 40 ft (12.2 m) |
Level Accuracy – Standard Range Probe, for indicated level range. Includes non-linearity, repeatability, and hysteresis at 25°C (77°F)
| 0.033 to 5.0 ft (0.01 to 1.52m): | ±0.008 ft/ft (±0.008 m/m) |
|---|---|
| >5.0 ft (>1.52 m): | ±0.012 ft/ft (±0.012 m/m) |
Level Accuracy – Extended Range Probe, for indicated level range. Includes non-linearity, repeatability, and hysteresis at 25°C (77°F)
| 0.05 to 15ft (0.015 to 4.57m): | ±0.03 ft (±0.009 m) |
|---|---|
| 0.05 to 21ft (0.015 to 6.4m): | ±0.09 ft (±0.027 m) |
| 0.05 to 30ft (0.015 to 9.14m): | ±0.3 ft (±0.09 m) |
Area Velocity Sensor – Low Profile
| Size (LxWxH): | 6 x 1.3 x 0.75 inches (15.2 x 3.3 x 1.9 cm) |
|---|---|
| Weight, incl. cable: | 2.1 lbs (0.96 kg) |
| Materials: | Epoxy, CPVC, stainless steel; PVC and CPVC cable |
| Operating Temperature Range: | 32° to 122°F (0° to 50°C) |
| Cable length: | 25 ft (8m) standard. Up to 75 ft (22.8 m) with optional extension. Up to 1000 ft (300 m) with optional Quick Disconnect Box. |
Velocity Measurement
| Method: | Doppler Ultrasonic, 500 kHz |
|---|---|
| Velocity range: | -5 to +20 ft/s (-1.5 to 6.1 m/s) |
| Minimum depth: | 0.08 ft (25mm), typical |
Level Measurement
| Method: | Submerged pressure transducer |
|---|---|
| Range: | 0.033 to 10 ft (0.01 to 3.05 m); max allowable level 20 ft (6.1 m) |
| Level Accuracy: | Depths from 0.033 to 5.0 ft (0.01 to 1.52m): ±0.008 ft/ft (±0.008 m/m); Depth >5.0 ft (>1.52 m): ±0.012 ft/ft (±0.012 m/m). Accuracy per foot of change from calibrated depth @ 77°F (25°C). Includes non-linearity and hysteresis. |
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